Culvert.



W. spHEWETT.

cuLvERT.

APPLICATION FILED IAN. 20| 1915. l

Patented June 22, 1915.

2 IsHEETs--SHEET l..

ortica.

WILLIAM s. HEWETT, or mnnnronrs, MINNESOTA.

curvnar.

specication'of Let-ters recent. Patented Jun@ 22,1915,

Applicationv led January 20, 1915. Serial No. 3,267.

To .all 'whom it' may concern: 4

l Be it known that I, WILLIAMS. Hnwn'rr, citizen of the United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Culverts, of which the following is a specification.

My invention relates t0 railroad or highway culverts and the object of the invent1on is to provide a culvert composed of concrete sections whichcan be easily and quickly assembled where the culvert is to be installed.

A. further object is to. provide a culvert capable of resisting shearing strain at the joints between the-sections and will not be twisted or distorted out of alinement by the load thereon.

A further object-is to provide alculvert *I of comparatively economical construction 20 and one which will be extremely durable.

Other objects of the invention will. appear from the following detailed description.

A The invention consists generally in various constructions and combinations, all as hereinafter described 'and particularly pointed out in the claims.

In the accompanying drawings lforming -part of this speclcation, Figure 1 is a plan sectional view of a'concrete culvert embodying my invention, Fig. 2 is a sideelevation,

partially in section, ofthe same, Fig. 3 isv a horizontal sectional view through oneend of the culvert, Fig. 4. is an end view, Fig.' 5 is a transverse sectional view through one of the culvert sections, Fig. 6 is a -vertical sectional view illustrating a.v modified construction.

s In the drawing, 2 represents a section or unit of the culvert, molded of concrete, each section being squared at the ends to fit snugly against the end of the abutting section and the sections are of suitable length for convenience in handling. The cross section of a section is substantially rectangular, with a similar shaped opening 3 extending lengthwise therethrough so that when the sections are placed end to end a continuous passage willbe formedthrough them. Pipes 4 lare molded in thecorners of the sections at a distance remote from the neutral axis of the section anda netting 5 of'suitable ,mesh is embedded in the walls of the section and at the corners rests on the pipes. One end of each section has recesses 6 therein concentric withthe pipes 4 and at the other end the and Wall are strengthened by pipes project beyond the-end of the section to enter the recess of the abutting section,

thereby holding the sections in alinementv With one another and resisting'the shearing strain. With this construction it will be sections. These pipes may be varied in diameter, according to the size Aoi? the sec-` tions and the area ofthe opening therein. When the sections have been placed in position, the shoes between their abutting ends may be filled with cement or other suitable plastic material, as indicated at A.

At each end of the culvert I provide bulkheads consisting of a base 7v having a depending flange at its outer end and an upimpossible for one section'to slip laterally or vertically out of alinelnent with the other` right wall 9 at its inner end. An opening 10 is provided in this wall to vregister with" the opening in the abutting culvertv section and recesses similar to those in the sections are formed in this upright wall to receive the projecting ends of the pipes.. The bulkhead has suitable upright wings 10 on each` -side of the base connecting it with the upright wall 9 and these wings with the base a suitable metallic reinforcing, as indicated.

At the base of the wall 9 in the floor of the bulkhead' I providel depressions or recesses 11 and' rods. 12 are inserted into the pipes in the sections, running continuously through the culvert from end toend. VThe lower rods are inserted through holes 13 at 1 the junction of the lioor and wall 9 of the sections firmly bound together. The rods passing through the pipes at the corners of the culvert sections are located, as plainly shown-lin'F-ig. 5, at points mostremote from the ,neutralI axis and beingso located, will most eli'ectually resistthe bending strain The ioor of the bulkhead will be iiush substantially-with thebottom of the passage -which the rods are tightened and the culvert through the sections and the wings preferably ilare slightly to direct the water toward the bulkhead opening.

The joint between the bulkhead and the adjacent culvert section may be closed in the same manner as described with reference to the joints between the abutting sections. A culvert made in this way will resist any vcrushing pressure to which it may be subjected, and will hold the sections'in perfect alinement under all conditions. The sections and bulkheads will, of course, be made in different sizes, according to the desired capacity 0f the culvert. The parts may be made and shipped to the points of installation of the culvert and assembled with ease and despatch, or, if preferred, can be made on the ground.

In Fig. 6 I have shown a modicationin the manner of assembling the parts of the y culvert, which consists in molding the bulkheads l5 around the ends of the culvert, the work being done at the placewhere the culvert is installed,'and, as indicated in the sectional gHre, the ends'o'f the culvert will be embedded in the verticaLwall of the bulkhead.

In various ways the details of construction may be modiied and still be within the scope of my invention.

I claim as my invention:

1. A culvertl composed of hollow concrete sections having pipes embedded therein, the sections having recesses at one end, and the pipes projecting from one end to enter the recesses of the adjoining section, rods passing through said pipes from oneI end of the culvert to the other, and means applied to the` ends of the rods for clamp-ing the sectio'ns together.

2. A culvert composed of hollow concrete sections having pipes embedded therein and projecting beyond the end of the sections tov lit in recesses of adjoining sections, bulkheads at opposite ends of the culvert, and

vclamping rods passed through the pipes of -ends of the rods for holding'the pipes in interlocking engagement with adjoining sections and clamping the several sections together.

4. A culvert comprising a plurality of concrete sections placed end to end and having a continuous water passage therethrough, rods passing through said culvert sections from end to end, bulkheads provided at the ends of the culvert and having a floor and an upright wall, the upper rods in'said cul- 'vert sections being anchored in the upper portion of said wall, and the lower rods of said sections being anchored in the lower portion of Said wall.

In witness whereof, I have hereunto set my hand this 15th day of January, 1915.

" WILLIAM S. HEWETT.

Witnesses:

EDWARD A. PAUL, G. E. SoRENsEN.

soA 

